You can have problems with they thyroid making too much or too little thyroid hormone. You can also have problems with it being too large (goiter) of having nodules or cysts in it. There are also occasional thyroid cancers. Most thyroid problems can be easily diagnosed and treated by a qualified doctor.
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2

Happy Skin:
Skin is the major protection of our delicate internal tissues from a harsh environment, it is susceptible to injury itself. Sun, shaving and many chemicals are very irritating as well as constant exposure to moisture reduces protective skin oils and sets the skin up for injury. The trick is to apply good protective skin cream frequently and minimize ongoing damage. Clean it using gentle means.
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4

No evidence.:
If you are asking whether it can be transmitted through dry skin, there is no evidence that it can. Hepatitis c is spread when blood from a person infected with the virus enters the body of someone not infected. Usually that's due to sharing drug needles, but sometimes it's from sharing personal care items that may have come in contact with another person’s blood, such as razors or toothbrushes.
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7

Skin:
sounds like you have eczyma or problem with your skin drying up a lot, try using olay ultra moisturizer body wash with shea butter instead of soaps, do not dry your skin completely after a shower just dab your skin, drink plenty of water, and when yo do apply ceramide cream make sure your skin is moist.
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8

Yes:
This is exactly what one should expect from a topical retinoid (differin (adapalene) is a retinoid). In the early studies on this class of medicine the researchers felt that if a patient is not getting red and peeling then the strength of the retinoid is not high enough. This side effect can often resolve or can be alleviated with a simple noncomedogenic moisturizer. Good question.
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9

Itchy feet:
Dry and itchy scaly feet is usually caused by a fungus and is most likely athletes foot. You need to purchase an over-the-counter antifungal medication and apply to your feet on a daily basis for proximally 3 to 4 weeks. If your symptoms do not resolve you may need a prescription antifungal cream. See a podiatrist for further evaluation.
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